The protest started out at about 300 or so. By the time the groups all gathered at the Renaissance Center, I'd say there were at least 1,000 people. It's hard to estimate the attendance during protests.

Also, the vehicles that have the ability to parallel park themselves are mentioned in the series as well. If you want to go back a few years more, electronic brake systems control a vehicle's brakes more than the driver at certain times.

The actual driver still has control over the semiautonomous, or semiautomated, vehicles that officials believe will be out by 2014-2015. Industry experts expect the driver, as with regular cruise control, will still responsible for any type of accident.

As for infrastructure, the semiautomated vehicles being designed right now use radar, ultrasonic sensors, cameras and GPS map data. No new infrastructure is needed.

The cost of the vehicles, as well as the evolution to automated vehicles, will be addressed in the series.

Thank you for reading and commenting. I used the "Obama fuel efficiency standards" because it is more recognizable than CAFE, or Corporate Average Fuel Economy. The article is not meant to be politically driven. The Obama administration introduced the new standards, but the main focus of this article is on the report.

"Technologies to improve fuel efficiency will cost drivers about $2,000, but ultimately they will save more than $6,400 in fuel bills, resulting in a net saving of up to $4,400 over the life of the vehicle."